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linux-next/drivers/scsi/qedi/qedi_fw_api.c
Tomer Tayar da09091732 qed*: Utilize FW 8.33.1.0 
Advance the qed* drivers to use firmware 8.33.1.0:
Modify core driver (qed) to utilize the new FW and initialize the device
with it. This is the lion's share of the patch, and includes changes to FW
interface files, device initialization flows, FW interaction flows, and
debug collection flows.
Modify Ethernet driver (qede) to make use of new FW in fastpath.
Modify RoCE/iWARP driver (qedr) to make use of new FW in fastpath.
Modify FCoE driver (qedf) to make use of new FW in fastpath.
Modify iSCSI driver (qedi) to make use of new FW in fastpath.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Bason <Yuval.Bason@cavium.com>
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Manish Chopra <Manish.Chopra@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-02 13:59:16 -05:00

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/* QLogic iSCSI Offload Driver
* Copyright (c) 2016 Cavium Inc.
*
* This software is available under the terms of the GNU General Public License
* (GPL) Version 2, available from the file COPYING in the main directory of
* this source tree.
*/
#include <linux/types.h>
#include <asm/byteorder.h>
#include "qedi_hsi.h"
#include <linux/qed/qed_if.h>
#include "qedi_fw_iscsi.h"
#include "qedi_fw_scsi.h"
#define SCSI_NUM_SGES_IN_CACHE 0x4
static bool scsi_is_slow_sgl(u16 num_sges, bool small_mid_sge)
{
return (num_sges > SCSI_NUM_SGES_SLOW_SGL_THR && small_mid_sge);
}
static
void init_scsi_sgl_context(struct scsi_sgl_params *ctx_sgl_params,
struct scsi_cached_sges *ctx_data_desc,
struct scsi_sgl_task_params *sgl_task_params)
{
u8 sge_index;
u8 num_sges;
u32 val;
num_sges = (sgl_task_params->num_sges > SCSI_NUM_SGES_IN_CACHE) ?
SCSI_NUM_SGES_IN_CACHE : sgl_task_params->num_sges;
/* sgl params */
val = cpu_to_le32(sgl_task_params->sgl_phys_addr.lo);
ctx_sgl_params->sgl_addr.lo = val;
val = cpu_to_le32(sgl_task_params->sgl_phys_addr.hi);
ctx_sgl_params->sgl_addr.hi = val;
val = cpu_to_le32(sgl_task_params->total_buffer_size);
ctx_sgl_params->sgl_total_length = val;
ctx_sgl_params->sgl_num_sges = cpu_to_le16(sgl_task_params->num_sges);
for (sge_index = 0; sge_index < num_sges; sge_index++) {
val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.lo);
ctx_data_desc->sge[sge_index].sge_addr.lo = val;
val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_addr.hi);
ctx_data_desc->sge[sge_index].sge_addr.hi = val;
val = cpu_to_le32(sgl_task_params->sgl[sge_index].sge_len);
ctx_data_desc->sge[sge_index].sge_len = val;
}
}
static u32 calc_rw_task_size(struct iscsi_task_params *task_params,
enum iscsi_task_type task_type,
struct scsi_sgl_task_params *sgl_task_params,
struct scsi_dif_task_params *dif_task_params)
{
u32 io_size;
if (task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE ||
task_type == ISCSI_TASK_TYPE_TARGET_READ)
io_size = task_params->tx_io_size;
else
io_size = task_params->rx_io_size;
if (!io_size)
return 0;
if (!dif_task_params)
return io_size;
return !dif_task_params->dif_on_network ?
io_size : sgl_task_params->total_buffer_size;
}
static void
init_dif_context_flags(struct iscsi_dif_flags *ctx_dif_flags,
struct scsi_dif_task_params *dif_task_params)
{
if (!dif_task_params)
return;
SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_PROT_INTERVAL_SIZE_LOG,
dif_task_params->dif_block_size_log);
SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_DIF_TO_PEER,
dif_task_params->dif_on_network ? 1 : 0);
SET_FIELD(ctx_dif_flags->flags, ISCSI_DIF_FLAGS_HOST_INTERFACE,
dif_task_params->dif_on_host ? 1 : 0);
}
static void init_sqe(struct iscsi_task_params *task_params,
struct scsi_sgl_task_params *sgl_task_params,
struct scsi_dif_task_params *dif_task_params,
struct iscsi_common_hdr *pdu_header,
struct scsi_initiator_cmd_params *cmd_params,
enum iscsi_task_type task_type,
bool is_cleanup)
{
if (!task_params->sqe)
return;
memset(task_params->sqe, 0, sizeof(*task_params->sqe));
task_params->sqe->task_id = cpu_to_le16(task_params->itid);
if (is_cleanup) {
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
ISCSI_WQE_TYPE_TASK_CLEANUP);
return;
}
switch (task_type) {
case ISCSI_TASK_TYPE_INITIATOR_WRITE:
{
u32 buf_size = 0;
u32 num_sges = 0;
init_dif_context_flags(&task_params->sqe->prot_flags,
dif_task_params);
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
ISCSI_WQE_TYPE_NORMAL);
if (task_params->tx_io_size) {
buf_size = calc_rw_task_size(task_params, task_type,
sgl_task_params,
dif_task_params);
if (scsi_is_slow_sgl(sgl_task_params->num_sges,
sgl_task_params->small_mid_sge))
num_sges = ISCSI_WQE_NUM_SGES_SLOWIO;
else
num_sges = min(sgl_task_params->num_sges,
(u16)SCSI_NUM_SGES_SLOW_SGL_THR);
}
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES, num_sges);
SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CONT_LEN,
buf_size);
if (GET_FIELD(pdu_header->hdr_second_dword,
ISCSI_CMD_HDR_TOTAL_AHS_LEN))
SET_FIELD(task_params->sqe->contlen_cdbsize, ISCSI_WQE_CDB_SIZE,
cmd_params->extended_cdb_sge.sge_len);
}
break;
case ISCSI_TASK_TYPE_INITIATOR_READ:
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
ISCSI_WQE_TYPE_NORMAL);
if (GET_FIELD(pdu_header->hdr_second_dword,
ISCSI_CMD_HDR_TOTAL_AHS_LEN))
SET_FIELD(task_params->sqe->contlen_cdbsize,
ISCSI_WQE_CDB_SIZE,
cmd_params->extended_cdb_sge.sge_len);
break;
case ISCSI_TASK_TYPE_LOGIN_RESPONSE:
case ISCSI_TASK_TYPE_MIDPATH:
{
bool advance_statsn = true;
if (task_type == ISCSI_TASK_TYPE_LOGIN_RESPONSE)
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
ISCSI_WQE_TYPE_LOGIN);
else
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_WQE_TYPE,
ISCSI_WQE_TYPE_MIDDLE_PATH);
if (task_type == ISCSI_TASK_TYPE_MIDPATH) {
u8 opcode = GET_FIELD(pdu_header->hdr_first_byte,
ISCSI_COMMON_HDR_OPCODE);
if (opcode != ISCSI_OPCODE_TEXT_RESPONSE &&
(opcode != ISCSI_OPCODE_NOP_IN ||
pdu_header->itt == ISCSI_TTT_ALL_ONES))
advance_statsn = false;
}
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_RESPONSE,
advance_statsn ? 1 : 0);
if (task_params->tx_io_size) {
SET_FIELD(task_params->sqe->contlen_cdbsize,
ISCSI_WQE_CONT_LEN, task_params->tx_io_size);
if (scsi_is_slow_sgl(sgl_task_params->num_sges,
sgl_task_params->small_mid_sge))
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES,
ISCSI_WQE_NUM_SGES_SLOWIO);
else
SET_FIELD(task_params->sqe->flags, ISCSI_WQE_NUM_SGES,
min(sgl_task_params->num_sges,
(u16)SCSI_NUM_SGES_SLOW_SGL_THR));
}
}
break;
default:
break;
}
}
static void init_default_iscsi_task(struct iscsi_task_params *task_params,
struct data_hdr *pdu_header,
enum iscsi_task_type task_type)
{
struct e4_iscsi_task_context *context;
u32 val;
u16 index;
u8 val_byte;
context = task_params->context;
val_byte = context->mstorm_ag_context.cdu_validation;
memset(context, 0, sizeof(*context));
context->mstorm_ag_context.cdu_validation = val_byte;
for (index = 0; index <
ARRAY_SIZE(context->ystorm_st_context.pdu_hdr.data.data);
index++) {
val = cpu_to_le32(pdu_header->data[index]);
context->ystorm_st_context.pdu_hdr.data.data[index] = val;
}
context->mstorm_st_context.task_type = task_type;
context->mstorm_ag_context.task_cid =
cpu_to_le16(task_params->conn_icid);
SET_FIELD(context->ustorm_ag_context.flags1,
E4_USTORM_ISCSI_TASK_AG_CTX_R2T2RECV, 1);
context->ustorm_st_context.task_type = task_type;
context->ustorm_st_context.cq_rss_number = task_params->cq_rss_number;
context->ustorm_ag_context.icid = cpu_to_le16(task_params->conn_icid);
}
static
void init_initiator_rw_cdb_ystorm_context(struct ystorm_iscsi_task_st_ctx *ystc,
struct scsi_initiator_cmd_params *cmd)
{
union iscsi_task_hdr *ctx_pdu_hdr = &ystc->pdu_hdr;
u32 val;
if (!cmd->extended_cdb_sge.sge_len)
return;
SET_FIELD(ctx_pdu_hdr->ext_cdb_cmd.hdr_second_dword,
ISCSI_EXT_CDB_CMD_HDR_CDB_SIZE,
cmd->extended_cdb_sge.sge_len);
val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.lo);
ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.lo = val;
val = cpu_to_le32(cmd->extended_cdb_sge.sge_addr.hi);
ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_addr.hi = val;
val = cpu_to_le32(cmd->extended_cdb_sge.sge_len);
ctx_pdu_hdr->ext_cdb_cmd.cdb_sge.sge_len = val;
}
static
void init_ustorm_task_contexts(struct ustorm_iscsi_task_st_ctx *ustorm_st_cxt,
struct e4_ustorm_iscsi_task_ag_ctx *ustorm_ag_cxt,
u32 remaining_recv_len, u32 expected_data_transfer_len,
u8 num_sges, bool tx_dif_conn_err_en)
{
u32 val;
ustorm_st_cxt->rem_rcv_len = cpu_to_le32(remaining_recv_len);
ustorm_ag_cxt->exp_data_acked = cpu_to_le32(expected_data_transfer_len);
val = cpu_to_le32(expected_data_transfer_len);
ustorm_st_cxt->exp_data_transfer_len = val;
SET_FIELD(ustorm_st_cxt->reg1.reg1_map, ISCSI_REG1_NUM_SGES, num_sges);
SET_FIELD(ustorm_ag_cxt->flags2,
E4_USTORM_ISCSI_TASK_AG_CTX_DIF_ERROR_CF_EN,
tx_dif_conn_err_en ? 1 : 0);
}
static
void set_rw_exp_data_acked_and_cont_len(struct e4_iscsi_task_context *context,
struct iscsi_conn_params *conn_params,
enum iscsi_task_type task_type,
u32 task_size,
u32 exp_data_transfer_len,
u8 total_ahs_length)
{
u32 max_unsolicited_data = 0, val;
if (total_ahs_length &&
(task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE ||
task_type == ISCSI_TASK_TYPE_INITIATOR_READ))
SET_FIELD(context->ustorm_st_context.flags2,
USTORM_ISCSI_TASK_ST_CTX_AHS_EXIST, 1);
switch (task_type) {
case ISCSI_TASK_TYPE_INITIATOR_WRITE:
if (!conn_params->initial_r2t)
max_unsolicited_data = conn_params->first_burst_length;
else if (conn_params->immediate_data)
max_unsolicited_data =
min(conn_params->first_burst_length,
conn_params->max_send_pdu_length);
context->ustorm_ag_context.exp_data_acked =
cpu_to_le32(total_ahs_length == 0 ?
min(exp_data_transfer_len,
max_unsolicited_data) :
((u32)(total_ahs_length +
ISCSI_AHS_CNTL_SIZE)));
break;
case ISCSI_TASK_TYPE_TARGET_READ:
val = cpu_to_le32(exp_data_transfer_len);
context->ustorm_ag_context.exp_data_acked = val;
break;
case ISCSI_TASK_TYPE_INITIATOR_READ:
context->ustorm_ag_context.exp_data_acked =
cpu_to_le32((total_ahs_length == 0 ? 0 :
total_ahs_length +
ISCSI_AHS_CNTL_SIZE));
break;
case ISCSI_TASK_TYPE_TARGET_WRITE:
val = cpu_to_le32(task_size);
context->ustorm_ag_context.exp_cont_len = val;
break;
default:
break;
}
}
static
void init_rtdif_task_context(struct rdif_task_context *rdif_context,
struct tdif_task_context *tdif_context,
struct scsi_dif_task_params *dif_task_params,
enum iscsi_task_type task_type)
{
u32 val;
if (!dif_task_params->dif_on_network || !dif_task_params->dif_on_host)
return;
if (task_type == ISCSI_TASK_TYPE_TARGET_WRITE ||
task_type == ISCSI_TASK_TYPE_INITIATOR_READ) {
rdif_context->app_tag_value =
cpu_to_le16(dif_task_params->application_tag);
rdif_context->partial_crc_value = cpu_to_le16(0xffff);
val = cpu_to_le32(dif_task_params->initial_ref_tag);
rdif_context->initial_ref_tag = val;
rdif_context->app_tag_mask =
cpu_to_le16(dif_task_params->application_tag_mask);
SET_FIELD(rdif_context->flags0, RDIF_TASK_CONTEXT_CRC_SEED,
dif_task_params->crc_seed ? 1 : 0);
SET_FIELD(rdif_context->flags0,
RDIF_TASK_CONTEXT_HOST_GUARD_TYPE,
dif_task_params->host_guard_type);
SET_FIELD(rdif_context->flags0,
RDIF_TASK_CONTEXT_PROTECTION_TYPE,
dif_task_params->protection_type);
SET_FIELD(rdif_context->flags0,
RDIF_TASK_CONTEXT_INITIAL_REF_TAG_VALID, 1);
SET_FIELD(rdif_context->flags0,
RDIF_TASK_CONTEXT_KEEP_REF_TAG_CONST,
dif_task_params->keep_ref_tag_const ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_VALIDATE_APP_TAG,
(dif_task_params->validate_app_tag &&
dif_task_params->dif_on_network) ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_VALIDATE_GUARD,
(dif_task_params->validate_guard &&
dif_task_params->dif_on_network) ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_VALIDATE_REF_TAG,
(dif_task_params->validate_ref_tag &&
dif_task_params->dif_on_network) ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_HOST_INTERFACE,
dif_task_params->dif_on_host ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_NETWORK_INTERFACE,
dif_task_params->dif_on_network ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_FORWARD_GUARD,
dif_task_params->forward_guard ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_FORWARD_APP_TAG,
dif_task_params->forward_app_tag ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_FORWARD_REF_TAG,
dif_task_params->forward_ref_tag ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_FORWARD_APP_TAG_WITH_MASK,
dif_task_params->forward_app_tag_with_mask ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_FORWARD_REF_TAG_WITH_MASK,
dif_task_params->forward_ref_tag_with_mask ? 1 : 0);
SET_FIELD(rdif_context->flags1,
RDIF_TASK_CONTEXT_INTERVAL_SIZE,
dif_task_params->dif_block_size_log - 9);
SET_FIELD(rdif_context->state,
RDIF_TASK_CONTEXT_REF_TAG_MASK,
dif_task_params->ref_tag_mask);
SET_FIELD(rdif_context->state, RDIF_TASK_CONTEXT_IGNORE_APP_TAG,
dif_task_params->ignore_app_tag);
}
if (task_type == ISCSI_TASK_TYPE_TARGET_READ ||
task_type == ISCSI_TASK_TYPE_INITIATOR_WRITE) {
tdif_context->app_tag_value =
cpu_to_le16(dif_task_params->application_tag);
tdif_context->partial_crc_value_b =
cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000);
tdif_context->partial_crc_value_a =
cpu_to_le16(dif_task_params->crc_seed ? 0xffff : 0x0000);
SET_FIELD(tdif_context->flags0, TDIF_TASK_CONTEXT_CRC_SEED,
dif_task_params->crc_seed ? 1 : 0);
SET_FIELD(tdif_context->flags0,
TDIF_TASK_CONTEXT_SET_ERROR_WITH_EOP,
dif_task_params->tx_dif_conn_err_en ? 1 : 0);
SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_FORWARD_GUARD,
dif_task_params->forward_guard ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_FORWARD_APP_TAG,
dif_task_params->forward_app_tag ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_FORWARD_REF_TAG,
dif_task_params->forward_ref_tag ? 1 : 0);
SET_FIELD(tdif_context->flags1, TDIF_TASK_CONTEXT_INTERVAL_SIZE,
dif_task_params->dif_block_size_log - 9);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_HOST_INTERFACE,
dif_task_params->dif_on_host ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_NETWORK_INTERFACE,
dif_task_params->dif_on_network ? 1 : 0);
val = cpu_to_le32(dif_task_params->initial_ref_tag);
tdif_context->initial_ref_tag = val;
tdif_context->app_tag_mask =
cpu_to_le16(dif_task_params->application_tag_mask);
SET_FIELD(tdif_context->flags0,
TDIF_TASK_CONTEXT_HOST_GUARD_TYPE,
dif_task_params->host_guard_type);
SET_FIELD(tdif_context->flags0,
TDIF_TASK_CONTEXT_PROTECTION_TYPE,
dif_task_params->protection_type);
SET_FIELD(tdif_context->flags0,
TDIF_TASK_CONTEXT_INITIAL_REF_TAG_VALID,
dif_task_params->initial_ref_tag_is_valid ? 1 : 0);
SET_FIELD(tdif_context->flags0,
TDIF_TASK_CONTEXT_KEEP_REF_TAG_CONST,
dif_task_params->keep_ref_tag_const ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_VALIDATE_GUARD,
(dif_task_params->validate_guard &&
dif_task_params->dif_on_host) ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_VALIDATE_APP_TAG,
(dif_task_params->validate_app_tag &&
dif_task_params->dif_on_host) ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_VALIDATE_REF_TAG,
(dif_task_params->validate_ref_tag &&
dif_task_params->dif_on_host) ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_FORWARD_APP_TAG_WITH_MASK,
dif_task_params->forward_app_tag_with_mask ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_FORWARD_REF_TAG_WITH_MASK,
dif_task_params->forward_ref_tag_with_mask ? 1 : 0);
SET_FIELD(tdif_context->flags1,
TDIF_TASK_CONTEXT_REF_TAG_MASK,
dif_task_params->ref_tag_mask);
SET_FIELD(tdif_context->flags0,
TDIF_TASK_CONTEXT_IGNORE_APP_TAG,
dif_task_params->ignore_app_tag ? 1 : 0);
}
}
static void set_local_completion_context(struct e4_iscsi_task_context *context)
{
SET_FIELD(context->ystorm_st_context.state.flags,
YSTORM_ISCSI_TASK_STATE_LOCAL_COMP, 1);
SET_FIELD(context->ustorm_st_context.flags,
USTORM_ISCSI_TASK_ST_CTX_LOCAL_COMP, 1);
}
static int init_rw_iscsi_task(struct iscsi_task_params *task_params,
enum iscsi_task_type task_type,
struct iscsi_conn_params *conn_params,
struct iscsi_common_hdr *pdu_header,
struct scsi_sgl_task_params *sgl_task_params,
struct scsi_initiator_cmd_params *cmd_params,
struct scsi_dif_task_params *dif_task_params)
{
u32 exp_data_transfer_len = conn_params->max_burst_length;
struct e4_iscsi_task_context *cxt;
bool slow_io = false;
u32 task_size, val;
u8 num_sges = 0;
task_size = calc_rw_task_size(task_params, task_type, sgl_task_params,
dif_task_params);
init_default_iscsi_task(task_params, (struct data_hdr *)pdu_header,
task_type);
cxt = task_params->context;
if (task_type == ISCSI_TASK_TYPE_TARGET_READ) {
set_local_completion_context(cxt);
} else if (task_type == ISCSI_TASK_TYPE_TARGET_WRITE) {
val = cpu_to_le32(task_size +
((struct iscsi_r2t_hdr *)pdu_header)->buffer_offset);
cxt->ystorm_st_context.pdu_hdr.r2t.desired_data_trns_len = val;
cxt->mstorm_st_context.expected_itt =
cpu_to_le32(pdu_header->itt);
} else {
val = cpu_to_le32(task_size);
cxt->ystorm_st_context.pdu_hdr.cmd.expected_transfer_length =
val;
init_initiator_rw_cdb_ystorm_context(&cxt->ystorm_st_context,
cmd_params);
val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.lo);
cxt->mstorm_st_context.sense_db.lo = val;
val = cpu_to_le32(cmd_params->sense_data_buffer_phys_addr.hi);
cxt->mstorm_st_context.sense_db.hi = val;
}
if (task_params->tx_io_size) {
init_dif_context_flags(&cxt->ystorm_st_context.state.dif_flags,
dif_task_params);
init_dif_context_flags(&cxt->ustorm_st_context.dif_flags,
dif_task_params);
init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
&cxt->ystorm_st_context.state.data_desc,
sgl_task_params);
slow_io = scsi_is_slow_sgl(sgl_task_params->num_sges,
sgl_task_params->small_mid_sge);
num_sges = !slow_io ? min_t(u16, sgl_task_params->num_sges,
(u16)SCSI_NUM_SGES_SLOW_SGL_THR) :
ISCSI_WQE_NUM_SGES_SLOWIO;
if (slow_io) {
SET_FIELD(cxt->ystorm_st_context.state.flags,
YSTORM_ISCSI_TASK_STATE_SLOW_IO, 1);
}
} else if (task_params->rx_io_size) {
init_dif_context_flags(&cxt->mstorm_st_context.dif_flags,
dif_task_params);
init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
&cxt->mstorm_st_context.data_desc,
sgl_task_params);
num_sges = !scsi_is_slow_sgl(sgl_task_params->num_sges,
sgl_task_params->small_mid_sge) ?
min_t(u16, sgl_task_params->num_sges,
(u16)SCSI_NUM_SGES_SLOW_SGL_THR) :
ISCSI_WQE_NUM_SGES_SLOWIO;
cxt->mstorm_st_context.rem_task_size = cpu_to_le32(task_size);
}
if (exp_data_transfer_len > task_size ||
task_type != ISCSI_TASK_TYPE_TARGET_WRITE)
exp_data_transfer_len = task_size;
init_ustorm_task_contexts(&task_params->context->ustorm_st_context,
&task_params->context->ustorm_ag_context,
task_size, exp_data_transfer_len, num_sges,
dif_task_params ?
dif_task_params->tx_dif_conn_err_en : false);
set_rw_exp_data_acked_and_cont_len(task_params->context, conn_params,
task_type, task_size,
exp_data_transfer_len,
GET_FIELD(pdu_header->hdr_second_dword,
ISCSI_CMD_HDR_TOTAL_AHS_LEN));
if (dif_task_params)
init_rtdif_task_context(&task_params->context->rdif_context,
&task_params->context->tdif_context,
dif_task_params, task_type);
init_sqe(task_params, sgl_task_params, dif_task_params, pdu_header,
cmd_params, task_type, false);
return 0;
}
int init_initiator_rw_iscsi_task(struct iscsi_task_params *task_params,
struct iscsi_conn_params *conn_params,
struct scsi_initiator_cmd_params *cmd_params,
struct iscsi_cmd_hdr *cmd_header,
struct scsi_sgl_task_params *tx_sgl_params,
struct scsi_sgl_task_params *rx_sgl_params,
struct scsi_dif_task_params *dif_task_params)
{
if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_WRITE))
return init_rw_iscsi_task(task_params,
ISCSI_TASK_TYPE_INITIATOR_WRITE,
conn_params,
(struct iscsi_common_hdr *)cmd_header,
tx_sgl_params, cmd_params,
dif_task_params);
else if (GET_FIELD(cmd_header->flags_attr, ISCSI_CMD_HDR_READ) ||
(task_params->rx_io_size == 0 && task_params->tx_io_size == 0))
return init_rw_iscsi_task(task_params,
ISCSI_TASK_TYPE_INITIATOR_READ,
conn_params,
(struct iscsi_common_hdr *)cmd_header,
rx_sgl_params, cmd_params,
dif_task_params);
else
return -1;
}
int init_initiator_login_request_task(struct iscsi_task_params *task_params,
struct iscsi_login_req_hdr *login_header,
struct scsi_sgl_task_params *tx_params,
struct scsi_sgl_task_params *rx_params)
{
struct e4_iscsi_task_context *cxt;
cxt = task_params->context;
init_default_iscsi_task(task_params,
(struct data_hdr *)login_header,
ISCSI_TASK_TYPE_MIDPATH);
init_ustorm_task_contexts(&cxt->ustorm_st_context,
&cxt->ustorm_ag_context,
task_params->rx_io_size ?
rx_params->total_buffer_size : 0,
task_params->tx_io_size ?
tx_params->total_buffer_size : 0, 0,
0);
if (task_params->tx_io_size)
init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
&cxt->ystorm_st_context.state.data_desc,
tx_params);
if (task_params->rx_io_size)
init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
&cxt->mstorm_st_context.data_desc,
rx_params);
cxt->mstorm_st_context.rem_task_size =
cpu_to_le32(task_params->rx_io_size ?
rx_params->total_buffer_size : 0);
init_sqe(task_params, tx_params, NULL,
(struct iscsi_common_hdr *)login_header, NULL,
ISCSI_TASK_TYPE_MIDPATH, false);
return 0;
}
int init_initiator_nop_out_task(struct iscsi_task_params *task_params,
struct iscsi_nop_out_hdr *nop_out_pdu_header,
struct scsi_sgl_task_params *tx_sgl_task_params,
struct scsi_sgl_task_params *rx_sgl_task_params)
{
struct e4_iscsi_task_context *cxt;
cxt = task_params->context;
init_default_iscsi_task(task_params,
(struct data_hdr *)nop_out_pdu_header,
ISCSI_TASK_TYPE_MIDPATH);
if (nop_out_pdu_header->itt == ISCSI_ITT_ALL_ONES)
set_local_completion_context(task_params->context);
if (task_params->tx_io_size)
init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
&cxt->ystorm_st_context.state.data_desc,
tx_sgl_task_params);
if (task_params->rx_io_size)
init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
&cxt->mstorm_st_context.data_desc,
rx_sgl_task_params);
init_ustorm_task_contexts(&cxt->ustorm_st_context,
&cxt->ustorm_ag_context,
task_params->rx_io_size ?
rx_sgl_task_params->total_buffer_size : 0,
task_params->tx_io_size ?
tx_sgl_task_params->total_buffer_size : 0,
0, 0);
cxt->mstorm_st_context.rem_task_size =
cpu_to_le32(task_params->rx_io_size ?
rx_sgl_task_params->total_buffer_size :
0);
init_sqe(task_params, tx_sgl_task_params, NULL,
(struct iscsi_common_hdr *)nop_out_pdu_header, NULL,
ISCSI_TASK_TYPE_MIDPATH, false);
return 0;
}
int init_initiator_logout_request_task(struct iscsi_task_params *task_params,
struct iscsi_logout_req_hdr *logout_hdr,
struct scsi_sgl_task_params *tx_params,
struct scsi_sgl_task_params *rx_params)
{
struct e4_iscsi_task_context *cxt;
cxt = task_params->context;
init_default_iscsi_task(task_params,
(struct data_hdr *)logout_hdr,
ISCSI_TASK_TYPE_MIDPATH);
if (task_params->tx_io_size)
init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
&cxt->ystorm_st_context.state.data_desc,
tx_params);
if (task_params->rx_io_size)
init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
&cxt->mstorm_st_context.data_desc,
rx_params);
init_ustorm_task_contexts(&cxt->ustorm_st_context,
&cxt->ustorm_ag_context,
task_params->rx_io_size ?
rx_params->total_buffer_size : 0,
task_params->tx_io_size ?
tx_params->total_buffer_size : 0,
0, 0);
cxt->mstorm_st_context.rem_task_size =
cpu_to_le32(task_params->rx_io_size ?
rx_params->total_buffer_size : 0);
init_sqe(task_params, tx_params, NULL,
(struct iscsi_common_hdr *)logout_hdr, NULL,
ISCSI_TASK_TYPE_MIDPATH, false);
return 0;
}
int init_initiator_tmf_request_task(struct iscsi_task_params *task_params,
struct iscsi_tmf_request_hdr *tmf_header)
{
init_default_iscsi_task(task_params, (struct data_hdr *)tmf_header,
ISCSI_TASK_TYPE_MIDPATH);
init_sqe(task_params, NULL, NULL,
(struct iscsi_common_hdr *)tmf_header, NULL,
ISCSI_TASK_TYPE_MIDPATH, false);
return 0;
}
int init_initiator_text_request_task(struct iscsi_task_params *task_params,
struct iscsi_text_request_hdr *text_header,
struct scsi_sgl_task_params *tx_params,
struct scsi_sgl_task_params *rx_params)
{
struct e4_iscsi_task_context *cxt;
cxt = task_params->context;
init_default_iscsi_task(task_params,
(struct data_hdr *)text_header,
ISCSI_TASK_TYPE_MIDPATH);
if (task_params->tx_io_size)
init_scsi_sgl_context(&cxt->ystorm_st_context.state.sgl_params,
&cxt->ystorm_st_context.state.data_desc,
tx_params);
if (task_params->rx_io_size)
init_scsi_sgl_context(&cxt->mstorm_st_context.sgl_params,
&cxt->mstorm_st_context.data_desc,
rx_params);
cxt->mstorm_st_context.rem_task_size =
cpu_to_le32(task_params->rx_io_size ?
rx_params->total_buffer_size : 0);
init_ustorm_task_contexts(&cxt->ustorm_st_context,
&cxt->ustorm_ag_context,
task_params->rx_io_size ?
rx_params->total_buffer_size : 0,
task_params->tx_io_size ?
tx_params->total_buffer_size : 0, 0, 0);
init_sqe(task_params, tx_params, NULL,
(struct iscsi_common_hdr *)text_header, NULL,
ISCSI_TASK_TYPE_MIDPATH, false);
return 0;
}
int init_cleanup_task(struct iscsi_task_params *task_params)
{
init_sqe(task_params, NULL, NULL, NULL, NULL, ISCSI_TASK_TYPE_MIDPATH,
true);
return 0;
}
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